SDL_stack_alloc3
Allocate memory on the stack (maybe).
Usage
#include "SDL3/SDL.h"
#define SDL_stack_alloc(type, count) (type*)alloca(sizeof(type)*(count))
Header file
Defined in SDL3/SDL_stdinc.h
Overview
If SDL knows how to access alloca() on the current platform, it will use it to stack-allocate memory here. If it doesn't, it will use
SDL_malloc () to heap-allocate memory.
Since this might not be stack memory at all, it's important that you check the returned pointer for NULL, and that you call
SDL_stack_free
on the memory when done with it. Since this might be stack memory, it's important that you don't allocate large amounts of it, or allocate in a loop without returning from the function, so the stack doesn't overflow.
Return value
Returns newly-allocated memory, or NULL on failure.
Thread safety
It is safe to call this macro from any thread.